EP 1361061 B1 20061213 - Ink ejecting device
Title (en)
Ink ejecting device
Title (de)
Tintenausstossgerät
Title (fr)
Dispositif à éjection d'encre
Publication
Application
Priority
JP 2002132730 A 20020508
Abstract (en)
[origin: EP1361061A1] A first cavity plate (10) formed with a first pressure chamber (16) and a second cavity plate (50) formed with a second pressure chamber are disposed on both sides of a piezoelectric actuator (20). A pressure generating portion (28a) is formed between opposed surfaces of the piezoelectric actuator. The first pressure chamber faces one of the opposed surfaces of the piezoelectric actuator while the second pressure chamber faces the other surface. The first and second pressure chambers communicate with each other via inner (56a) and outer holes (56b) that penetrate the piezoelectric actuator. The pressure generating portion is deformable to expand to shift the opposed surfaces of the piezoelectric actuator toward the first and second pressure chambers and reduce the volume of the first and second pressure chambers. As a result, an ink droplet (90) is ejected from a nozzle (15) that communicates with both the first and second pressure chambers. Because the deformation of the piezoelectric actuator on both sides thereof is effectively used to eject ink, a drive voltage for the pressure generating portion can be reduced. <IMAGE>
IPC 8 full level
B41J 2/045 (2006.01); B41J 2/14 (2006.01); B05B 1/04 (2006.01); B41J 2/055 (2006.01); B41J 2/16 (2006.01)
CPC (source: EP US)
B41J 2/14282 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 1361061 A1 20031112; EP 1361061 B1 20061213; DE 60310299 D1 20070125; DE 60310299 T2 20070412; JP 2003320666 A 20031111; US 2003210304 A1 20031113; US 6918660 B2 20050719
DOCDB simple family (application)
EP 03010192 A 20030506; DE 60310299 T 20030506; JP 2002132730 A 20020508; US 42318103 A 20030425